Centrifugal machine



May 27, 1941. V RlEL 2,243,366

' CENTRIFUGAL MACHINE 7 Filed Sept. 21, 1937 E v v 4 I u v 3 r z E II 30 I3 I I2 I I' E carries the ordinary open,

, projecting annular strip 4.

Through a pipe I! Patented May 27, 1941 Pieter van Riel,

Delft, lsetherlands, assignor to N V. Machinefabriek Reincveld, erlands,"a company of the Netherlands mm, Neth Application September 21,1937, SeriaINo.;164 ,93d Germany September 25, 1986- t scams (or zit-sol This invention relates'to a centrifugal ma-, chine provided with a perforated .adapted not only for separating solids and liquids basket and from one another, but also for washing, impreg-- nating or otherwise treating the sohd material remaining in thebasket after the liquid material has been extracted. v

In order that the invention may be well understood by those skilled in the art, the same will now be described in further detail with reference crank handle the scraper H .can be moved either into a position wherein it is substantially parallel with the cylindrical walls of both baskets, or into an inclined position wherein it can loosen any solid material that may have accumulatedon the inner wall of the basket 5.

- Assuming, .by way of example, that the de- -scribed machine is to be used in themanufacto the annexed drawing, which illustrates an axial sectional view of an The horizontal shaft I of embodiment thereof. the driving motor 2 perforated basket 3 provided along its outer edge with an inwardly The hub portion of this basket is supported by the hub of a second, impervious basket 5, whichis directly secured to the shaft I and surrounds which it is suitably spaced. As shown, the basket 5 is also provided along its outer edge with a an annular strip 6, which projects inwardly I proteinshave follows:

' ture of maize starch, which is practically free from soluble proteins, the modus operandil is as liquorpfrom which the insoluble been removed, for 'instanceby hy- The starch drochloric acid, is fed through the pipe I 2 into the basket 3, from.

through a somewhat greater distance than does the strip 4.

In alignment with the shaft I there is provided api'pe 1 for supplying the liquor employed for washing or otherwise treating the solid'material remaining in the basket 3. Through a hood 8 and suitable passages in the hub of basket 5, said pipe communicates with the baskets.

The basket 5 is enclosed by a casing 9, which forms part of the'motor casing and carries the interspace of both ordinary mechanism I 0, by means of which a.

scraper II for emptying the basket 3 is adapted to be reciprocated in a substantially radial direction. The reciprocating mechanism includes a motorl6 designed to operate an overhung crank 18 through a suitable reduction gear II. This crank reciprocates a connecting'rod 19', the lower end of which is and is connected to the scraper I l by a bracket 2 I.

with the material to be treated.

Opening into the space between the annular strips 4 and 6 is a discharge pipe l3 arranged for radial reciprocation by means of a hand lever or a handle l5. I

Finally, the machine is provided with a sub stantially fiat scraper H .in the space between the cylindrical walls of the baskets 3 and 5, said scraper being mounted for rotation about an axis in parallel relation with the shaft l and adapted, through a crank handle not shown, to

be turned about said axis. By means of said I guided by a crosshead 20 the basket 3 can be supplied the rapidly revolving basket 3, it being understood that the drain pipe-l3 assumes its outer is located close to theposition, wherein its mouth inner side of the cylindrical wall of basket I 5. The starch liquor is thus thrown rapidly outwards against the perforated wall of said basket, so that the juice is extracted therefrom and is proiected to the impervious wall of basket 5 whence it is discharged by drain pipe l3. V

After some time, the supply of starch liquor is vcut oil, and when-the extraction of juice from the material in basket 3 is I is retracted and fresh finished, the drain pipe" through pipe 1 and hood 8 into the interspace of both baskets. Thereby, the layer of starch accumulated on the perforated wall of basket 3 is impregnated with water entering from outside through the perforated, wall, and may .evenbe flooded. 'Ihereupon, the water supply is cut 011.

and the centrifugal apparatus allowed to continue its revolving movement until the proteins still present in the starch, are completely dissolved. Flnally, thepipe I3 'is again moved out-' wards, whereby the water and the proteins dissolved therein are drained, and the practically dry starch-is removed from basket 3 by'means 'of the scraper II. If necessary,

removed.

- In view of the above explanationit is not nec- I essary to describe themanner in which. the novel 1 water is introduced the washing operation may be repeated before the starch is basket having a hub portion mounted on the hub 01' the cylinder, the wall of the cylinder and basket being spaced to provide an inlet passage, an inlet pipe substantially in line with the shaft, a hood communicating with the delivery end of the pipe and open to said space to deliver material within the cylinder and exteriorly of the basket, and a drain pipe movable to and from the space between the cylinder and basket, said drain pipe when within the space forming an operative drain from said space through the pipe, said pipe when beyond the space preventing such drain.

2. In a centrifugal machine, a motor, a shaft therefor, an imperforate cylinder, a perforated basket having a hub portion mounted on the hub of the cylinder, the wall of the cylinder and basket being spaced to provide an inlet passage, an inlet pipe substantially in line with the shaft, a hood communicating with the delivery end of the pipe and open to said space to deliver material within the cylinder and exteriorly of the basket, a scraper arranged in the space between the cylinder and basket, and means for moving the scraper into and out of cooperative relation with the interior surface of the wall of the cylinder.

3. In a centrifugal machine, a perforated substantially cylindrical basket mounted for rapid rotation about its axis and provided at one end with an inwardly extending annular flange, an imperforate cylinder secured to and surrounding said perforated basket but suitably spaced therefrom, said cylinder being Provided at the end adjacent to the flanged end of the perforated basket with an annular flange axially spaced from and interspace, said drain pipe opening into the space between said annular flanges and means for substantially radially adjusting the drain pipe into and out of said interspace.

4.. In a centrifugal machine, a motor a shaft therefor, an imperforate cylinder having aninwardly extending annular flange at one end thereof and provided in addition to a hub portion secured to said'shaft with a radially extending wall connecting said hub with the end of the cylinder remote from said annular flange, a perforated cylindrical basket coaxially mounted within said imperforate cylinder but suitably spaced therefromand having atits end adjacent tothe flanged end of said cylinder an annular flange axially spaced from and extending inwardly through a smaller distance than does the flange of the imperforate basket, said basket being provided in addltion'to a hub portion mounted on the hub of the cylinder with a radially extending wall interconnecting its hub portion with the end of said basket remote from said annular flange, said radially extending walls being spaced apart to provide a space communicating with the space between the cylinder and the basket, an inlet pipe for treating liquor in line with the shaft and communicating with the space between said radially extending walls, a second inlet pipe for supplying material to be treated into the basket, and a drain pipe for removing liquid from the space between the cylinder and the basket, said drain pipe opening into the space between said annular flanges and means for substantially radially adjusting the drain pipe into and out of said interspace. I

5. Ina centrifugal machine, a perforated substantially cylindrical basket mounted for rapid rotation about its axis and provided at one end with 'an inwardly extending annular flange, an imperforate cylinder secured to and surrounding said perforated basket but suitably spaced therefrom, said cylinder being provided at the end adjacent to the flanged end of the perforated basket with an annular flange axially spaced from and extending inwardly through some distance beyond the flange of said perforated basket, means for supplying material to be treated into said perforated basket, means for supplying treating liquor directly into the interspace of said baskets, a drain pipe for removing liquid from said interspace, said drain pipe opening into the space between said annular flanges and means for substantially radially adjusting the drain pipe into and out of said interspace, a scraper arranged in the space between the cylinder and the basket,

and means for moving said scraper into and out inder remote from said annular flange, a perforated cylindrical basket coaxially mounted within said imperforate cylinder but suitably spaced therefrom and having at its end adjacent to the flanged end of said cylinder an annular flange axially spaced from and extending inwardly through a smaller distance than does the flange of the imperforate basket, said basket being provided in addition to a hub portion mounted on the hub of the cylinder with a radially extending wall interconnecting its hub portion with the end of said basket remote from said annular flange, said radially extending walls being spaced apart to provide a space communicating with the space between the cylinder and the basket, an inlet pipe for treating liquor in line with the shaft and communicating with the space between said radially extending walls, a second inlet pipe for supplying material to be treated into the basket, a drain pipe for removing liquid from the space between the cylinder and the basket, said drain pipe opening into the space between said wall of the cylinder.

PIETER VAN IRIEL. 

